Coupling



FIG. 1 is a top, front, right side perspective view of a couplingshowing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines of FIGS. 1-7 illustrate portions of the coupling thatform no part of the claimed design. The dash-dot-dash broken lines shownin FIGS. 1-6 define boundaries of the claimed design.

CLAIM The ornamental design for a coupling, as shown and described.